Gypsum, typical sulfate mineral of wonderful commercial significance, made up of hydrated calcium sulfate (CaSO4·2H2O). In effectively-produced crystals the mineral normally is known as selenite. The fibrous huge wide range incorporates a silky lustre and is named satin spar; it is actually translucent and opalescent and is also valued for https://www.propanraya.com/id/produk/eco-gypsum-ee-4050